JPH108411A - Railroad crossing structure for railway track - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railroad crossing structure using a planking which bears vibration produced when a train or a tramcar passes and load and abrasion produced when an automobile, a bicycle and a person pass, and is excellent in durability, and which can be simply removed at the time of repairing. SOLUTION: A railroad crossing structure for a railway track is formed by stopping a planking 1 where a steel plate 21 having a rubber layer 22 on the upper surface and a plate-like synthetic resin foaming body 31 having a hard rubber layer 32 on the lower surface are superposed on a sleeper 4 by a nail-like fixture 5. The steel plate 21 is sandwiched between the rubber layer 22 and the synthetic resin foaming body 31 to be hard to rust. Further, the rubber layer 22 is provided on the surface, it is hard to wear away. Further, as the steel plate 21 is placed on the synthetic resin foaming body, when an automobile or the like passes on the planking 1, it is not recessed and not worn away. Thus, the planking has good weather resistance and good mechanical strength, it has good durability. Further, as the synthetic resin foaming body is provided, planking is light and easily moved. Accordingly, it is convenient at the time of repairing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a railroad level crossing structure.

[0002]

2. Description of the Related Art Conventionally, as a railroad crossing structure, a wooden floor plate is fixed to a sleeper with nail-shaped fixing devices such as screw nails, dog nails, bolts and nuts, and coach screws, and the upper surface of the floor plate and the upper surface of the rail are connected. The rails and the road intersecting with the rails are almost equal to each other, so that there is no obstacle to traffic such as cars, bicycles and people. In addition, asphalt,
There is also a structure in which a recycled board made of synthetic resin, rubber, concrete, or the like is formed into a plate shape, or a sleeper provided with this rubber or the like provided on a wooden board is attached to a sleeper. For example, JP-A-62-22
Japanese Patent No. 5603 describes a floor board in which a rubber board is joined to a wooden board.

[0003]

The floor plate used for the railroad crossing structure must satisfy the following conditions. That is, to withstand the vibrations generated when passing through trains and trains. In addition, it is necessary to withstand the load, abrasion, etc. generated when a car, a bicycle, a person, etc. passes a railroad crossing, and it is not slippery. Also, it should have good durability for long-term use. or,
A structure that can be easily removed to repair tracks and roads.

[0004] However, none of the conventional floor boards satisfies all of these requirements. More specifically, there is a problem that the wooden floorboard is inferior in durability because it is worn, cracked, or decayed during long-term use. A floor plate provided with a rubber plate on a wooden plate is preferable because the surface is hardly worn and hard to slide, but there is a problem that the wooden plate is decayed or cracked, resulting in poor durability. Asphalt baseboards need to be removed and reconstructed each time the track or road is repaired, making repairs difficult and wasteful of resources.

Further, there is a problem that the sole plate made of a synthetic resin regenerated product has insufficient strength, heat resistance and weather resistance are insufficient and durability is poor. Moreover, synthetic resin soleplates and rubber soleplates are expensive. Moreover, although the concrete flooring is excellent in load resistance and durability, it is inconvenient when repairing tracks and roads because of its slippery surface and heavy weight, and it is difficult to use on soft ground. Further, there is a problem that the price and the construction cost are high. Therefore, an object of the present invention is to withstand the vibration and the abrasion generated when a train, a train passes, or a car, a bicycle, or a person passing therethrough, has excellent durability, and can be easily removed at the time of repair. An object of the present invention is to provide a railroad crossing structure using a floor plate.

[0006]

Means for Solving the Problems The present invention has been made to achieve the above object, and the invention according to claim 1 comprises a steel plate having a rubber layer on at least an upper surface and a hard rubber layer on a lower surface. A floor plate obtained by superposing a plate-like synthetic resin foam having the above-mentioned synthetic resin foam in this order from the top is fixed to a sleeper with a nail-like fixing tool.

According to a second aspect of the present invention, there is provided a steel surface having at least a rubber layer on an upper surface, a plate-like synthetic resin foam,
A sole plate obtained by superposing a steel plate having a rubber layer on at least the lower surface in this order from the top is fastened to a sleeper with a nail-like fixing tool.

[0008] The steel sheet having a rubber layer on at least the upper surface used in the first and second aspects of the present invention may be a steel sheet having a rubber layer only on the upper surface, or a rubber layer on the upper surface and the lower surface. It may have a rubber layer, or may have a rubber layer around the steel plate (upper surface, lower surface, side surface). The steel plate having a rubber layer at least on its surface is preferably provided with through holes so that it can be easily attached to the crossties with nail-shaped fixing devices. In addition, as the rubber used for the steel sheet having a rubber layer on at least the surface,
Any suitable material may be used, but it has good durability and
A spring type A hardness meter having a hardness of 30 to 90 is preferable. In particular, 50 to 60 with a JIS spring type A hardness meter.
Is preferred. Further, it is preferable that the surface is provided with irregularities so as not to slip easily. The thickness of the steel sheet having a rubber layer on its surface may be arbitrary, but is preferably 20 to 40 mm. A preferred product of the steel sheet having the rubber layer is "Toughness Rubber Protective Plate" manufactured by Mitsuuma Corporation.

The synthetic resin foam used in the first and second aspects of the present invention is a polymer such as a polyethylene resin, a polypropylene resin, a polyvinyl chloride resin, a polystyrene resin, a polymethyl methacrylate or the like. Foamed synthetic resin such as thermoplastic resin such as copolymer such as vinyl-ethylene copolymer and vinyl chloride-vinyl acetate copolymer, and thermosetting resin such as polyurethane resin, polyester resin and polyether resin. It is. The expansion ratio may be arbitrarily selected, but if the expansion ratio is small, the weight is too heavy to move when repairing, and if the expansion ratio is too large, the mechanical strength is reduced. A preferred product of the synthetic resin foam is "Eslen EPS" manufactured by Sekisui Plastics Co., Ltd.

The nail-shaped fixing tool used in the first and second aspects of the present invention includes a screw nail, a dog nail, and a bolt.
Long like a nail or nail like a nut or coach screw,
The thing which can fix a floor board and a sleeper. The rubber used for the hard rubber layer provided on the lower surface of the synthetic resin foam according to the first aspect has good durability, and is preferably a hard rubber having a JIS spring A hardness meter of about 90.

The steel sheet having a rubber layer on at least the lower surface used in the invention of claim 2 may be one having a rubber layer only on the lower surface or one having a rubber layer on the upper surface and the lower surface. It may have a rubber layer around the steel plate (upper surface, lower surface, side surface). The steel plate having a rubber layer on at least the back surface is preferably provided with through holes so that the steel plate can be easily attached to the sleeper with a nail-shaped fixing tool. As the rubber used for the steel sheet having a rubber layer on at least the surface, any suitable rubber may be used, but it is preferable to use a rubber having good durability and a JIS spring-type A-type hardness meter of 30 to 90. In particular, J
It is preferably from 50 to 60 using an IS spring type A hardness meter.

In the sole plate used in the first aspect of the present invention, a steel sheet having a rubber layer on the upper surface and a synthetic resin foam having a rubber layer on the lower surface are polymerized in this order. Although a steel sheet having a rubber layer on the upper surface, a plate-shaped synthetic resin foam, and a steel sheet having a rubber layer on the lower surface are polymerized in this order, this polymerization may be simply superimposed. Alternatively, they may be superposed and integrated.

(Operation) Since the steel plate having the rubber layer on at least the upper surface is provided on the surface of the floor plate used in the railroad crossing structure according to the first aspect of the present invention, when the floor plate is fastened to the sleeper, the rubber on the surface is removed. Non-slip and no wear due to layers. or,
There is little noise generated when cars and the like pass. If unevenness is provided on the surface, it becomes more difficult to slip. Further, since this steel sheet is sandwiched between the rubber layer and the synthetic resin foam having the rubber layer on the lower surface, it is resistant to rust and has good durability. A steel sheet covered with a rubber layer and having a rubber layer around it has particularly good durability.
Hard rubber or synthetic resin foam constituting a synthetic resin foam having a hard rubber layer on the lower surface has good weather resistance. Therefore, this sole plate has good durability.

Further, since there is a synthetic resin foam having a rubber layer on the lower surface, the entire soleplate is light and easy to move.
Useful for repairs. In particular, a steel sheet having a rubber layer on the surface and a synthetic resin foam having a hard rubber layer on the lower surface are simply overlapped, and those that are not integrated can be moved separately because they can be moved separately. In addition, since a steel plate having a rubber layer on an upper surface is provided on the synthetic resin foam, the load of an automobile or the like is dispersed by the steel plate, and the synthetic resin foam is not dented or worn. In addition, since there is a hard rubber layer on the lower surface of the synthetic resin foam, even if an automobile or the like passes over the floor plate and presses the floor plate, small stones such as sleepers and ballasts are included in the synthetic resin foam. There is no sink. Also, when this floor plate is fixed to the sleeper with a nail-shaped fixing tool, the lower surface has a hard rubber layer, so that it is in close contact with the sleeper and is difficult to move.

According to the second aspect of the present invention, a steel sheet having a rubber layer on at least the upper surface is used, or a synthetic resin foam is used. Sometimes easy to move. Also, even when an automobile or the like passes over the above, the synthetic resin foam does not dent.
Further, since a steel plate having a rubber layer on the lower surface is used under the synthetic resin foam, even if an automobile or the like passes over the floor plate and presses the floor plate, the sleeper or the ballast is shifted from the floor plate according to claim 1. Pebbles such as do not sink into this synthetic resin foam. In addition, since the rubber used for the rubber layer does not necessarily have to be hard, when the floor board is fixed to the sleeper with a nail-like fixing tool, the floor board is more closely attached to the sleeper than the floor board according to claim 1 and is less likely to move. be able to.

[0015]

Next, an embodiment of the present invention will be described. 1 and 2 show an embodiment of the railroad crossing structure of the present invention. FIG. 1 (a) is an explanatory view of the railroad crossing as viewed from obliquely above, and (b) is an A- of FIG. FIG. 2 is a cross-sectional view taken along the line A, and FIG.

In FIGS. 1 and 2, reference numeral 1 denotes a sole plate, which is composed of a rubber-steel laminated plate 2 having a thickness of 20 mm and a core member 3, and whose overall height is substantially the same as the height of the rail. . The rubber laminate 2 has a rubber layer 22 made of synthetic rubber provided around a steel plate 21.
Is provided with a groove-like concave / convex pattern 23 on the upper surface thereof. The rubber layer 22 has a hardness of 50 to 60 measured by a JIS spring type A hardness meter.
It is made of synthetic rubber having a hardness of, and has excellent elasticity and abrasion resistance. The rubber-steel laminate 2 is provided with a through hole 24 penetrating from the front surface to the back surface.

The core material 3 is formed by bonding a hard rubber layer 32 to the lower surface of a synthetic resin foam 31 with an adhesive. The synthetic resin foam 31 is a polystyrene resin foam having a density of 29 kg / m ³ (expansion ratio: about 33 times), and is manufactured by extruding while foaming with an extruder.
This synthetic resin foam 31 shows a compressive stress of 14 tf / m ^{2 in} the elastic region. This compressive stress withstands a load of 22.4 t with the size of one sleeper. In addition, it has been found that the synthetic resin foam having the size of the sleeper can withstand a load of 22.4 t even if it is repeated more than 1,000,000 times.

The hard rubber layer 32 is a synthetic rubber plate having a JIS spring type A hardness scale of 90. 4 is a sleeper. 5
Is a nail-shaped fixture made of a coach screw. 6 is a ballas. 7 is a rail.

Next, the construction method and operation of the railroad crossing structure will be described. As shown in FIG.
Core 3 between rubber and rail 7 and rubber-steel laminate 2 thereon
Are superimposed and screwed into the core material 3 and the sleeper 4 through the through holes 24 of the nail-shaped fixing device 5, and the floor board 1 is fixed to the sleeper 4. Similarly, the floor boards 1 are fixed to the sleepers 4 on both sides of the rail 7. In the railroad crossing where the floor board 1 is attached to the sleeper 4 in this way, the rubber layer 22 is provided on the upper surface, and the rubber layer 22
Has a concave and convex pattern, so that it is hardly worn even when a car or the like passes, the car or the like passing over it is hard to slip, and the noise generated when the car or the like passes is small.

The synthetic resin foam 31 used for the core material 3
There is a rubber-steel laminated plate 2 above, so that the load of an automobile or the like is dispersed throughout by the steel plate 21 of the rubber-steel laminated plate 2, and the synthetic resin foam 31 is not dented or worn. A hard rubber layer 3 is formed on the lower surface of the synthetic resin foam 31.
Since there are two, even if an automobile or the like passes over the floor plate and the floor plate 1 is pressed, pebbles such as the sleepers 4 and the ballasts 6 do not sink into the synthetic resin foam 31. Further, if the floor board 1 is fixed to the sleeper 4 with a nail-shaped fixing tool, the lower side has a hard rubber layer, so that it is in close contact with the sleeper and is difficult to move.

As described above, the rubber-steel laminated plate 2 is
Is provided with a rubber layer 22 made of a synthetic rubber, and has good weather resistance. Further, since the core material 3 is composed of the synthetic resin foam 31 and the hard rubber layer 32, the weather resistance is good. In addition, the rubber-laminate 2 is not worn and the core material 3 is not depressed and can be used for a long period of time. The rubber-steel laminate 2 is light because it is as thin as 20 mm, and the core 3 is made of a synthetic resin foam 31 and a hard rubber layer 32.
It is light because it consists of In addition, since the two are merely superposed, the sole plate 1 can be easily moved separately, which is convenient for repair.

[0022]

According to the railroad crossing structure of the first aspect of the present invention, since the steel plate having the rubber layer on the upper surface is provided at least on the upper surface, when the floor plate is fixed to the sleeper, the rubber layer on the surface is obtained. Non-slip and wear-free. In addition, there is little noise generated when an automobile or the like passes. Further, since the steel plate is sandwiched between the rubber layer and the synthetic resin foam having the rubber layer on the lower surface, the durability of the floor plate is good. In addition, since there is a synthetic resin foam having a rubber layer on the lower surface, the entire soleplate is light and easy to move, which is convenient for repair.

Also, synthetic resin foams generally have low mechanical strength and, therefore, are dented or worn when an automobile or the like passes over them. Since there is a steel plate having a rubber layer on the upper surface, the load of an automobile or the like is dispersed throughout by the steel plate, and the synthetic resin foam is not dented or worn. In addition, since there is a hard rubber layer on the lower surface of the synthetic resin foam, even if an automobile or the like passes over the floor plate and presses the floor plate, small stones such as sleepers and ballasts are included in the synthetic resin foam. There is no sink. Also, when this floor plate is fixed to the sleeper with a nail-shaped fixing tool, the lower surface has a hard rubber layer, so that it is in close contact with the sleeper and is difficult to move. As described above, since the railroad crossing structure of the present invention uses an extremely excellent floor plate, the railroad crossing is excellent.

According to the second aspect of the present invention, since a steel sheet having a rubber layer on at least the upper surface is used or a synthetic resin foam is used, the durability is good and the repair is performed as described in the first aspect of the present invention. Sometimes easy to move. Also, even when an automobile or the like passes over the above, the synthetic resin foam does not dent.
Further, since a steel plate having a rubber layer on the lower surface is used under the synthetic resin foam, even if an automobile or the like passes over the floor plate and presses the floor plate, the sleeper or the ballast is shifted from the floor plate according to claim 1. Such pebbles do not sink into this synthetic resin foam, and if the floor board is fixed to the sleeper with a nail-like fixing tool, it will stick to the sleeper and will not move easily.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a railroad crossing structure of the present invention, in which (a) is an explanatory view of a railroad crossing as viewed obliquely from above,
(B) is a sectional view taken along line AA of (A).

FIG. 2 is an explanatory diagram showing a state in which a floor plate is laid.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base plate 2 rubber-steel laminated plate 21 steel plate 22 rubber layer 23 uneven pattern 24 through hole 3 core material 31 synthetic resin foam 32 hard rubber layer 4 sleeper 5 nail-shaped fixing tool (coach screw) 6 valley 7 rail

Claims (2)

[Claims] 1. A sole plate obtained by superposing a steel plate having a rubber layer on at least an upper surface and a plate-like synthetic resin foam having a hard rubber layer on a lower surface in this order from the top is fixed to a sleeper with a nail-like fixing tool. A railroad crossing structure for a railway. 2. A base plate having a steel surface having a rubber layer on at least an upper surface thereof, a plate-shaped synthetic resin foam, and a steel plate having a rubber layer on at least a lower surface, which are superimposed in this order from the top, is a sleeper using a nail-like fixing tool. A railroad crossing structure which is fixed to a railroad crossing.